Hello, i'm a newbie here, i own a 2006 Ram 1500 4X4 Big Horn edition with 65K miles on it, and i hope to be a part of this online community. Anyway, I've started noticing a troubling behavior on my truck when in 4WD mode. Basically, what i've noticed is there's a jerk, or a kick coming from what felt like the front differential. It occurs about every minute or so, and it is more severe when coasting, rather than when accelerating. I mainly use 4X4 when i take the truck to the snow in the mountains and this issue just started occurring recently at the beginning of this season. Any ideas on what this could be? I would like to get some input if possible before i start tearing the thing apart. Thank you.